Loom for making laces.



No. 733,426. PATENTED JULY 14, 1903.

A. RONSDORF.

LOOM FOR MAKING LAGBS APPLIOATION FILED OCT. 23, 1901..

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LOOM FOR MAKING LAOES.

APPLICATION FILED 0012a, 1901.

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FFICE.

ATE-NT AUGUST RONSDORF, OF AMSTERDAM, NETHERLANDS, ASSIGNOR TO JAN HERMAN VAN EEGHEN AND ISAAK DA COSTA, OF AMSTERDAM, NETH- ERLANDS.

LOOM FOR MAKING LACES.

SPECIFICATION forming part of Letters Patent N 0. 733,426, dated uly 14, 1903.

Application filed October 23,1901- 7 Serial No. 79,728. (No model.)

To (all whom it may concern:

Be it known that 1, AUGUST RoNsDoRF, a subject of the Emperor of Germany, residing at Amsterdam, in the Kingdom of the Netherlands, have invented a new and useful Improvement in Looms for Making Laces, of which the following is a specification.

My invention has for its object a loom on which lace fabric may be produced; and it consists in the arrangements of parts more clearly hereinafter described, and claimed at the end of this specification.

My invention is illustrated on the accompanying drawings, of which- Figure l is a face View of the apparatus. Figs. 2 and 3 are horizontal sections of the same,showing the working of the device. Fig. 4. is a detail of construction.

In the accompanying drawings,a designates the frame of the loom; b, a-jacquard-machine of any known construction for raising the groups of cords cl 6 attached to the heddles.

fis the batten. It is provided with a reed comprising the parts 0, e, and d. The dents of the part (1 are open at the bottom. The reed d is raised and lowered in the batten, the parts '0 c of the reed being of usual construction and. arranged in a fixed position in the batten. Through the reed 0 pass the warp-threads 0 being carried by the heddles 0. Through the reed 6 pass the warp-threads c suspended in the heddles c, while through the reed 61' run the warp-threads d governed by the heddles d. The heddles d are passed through a number of frames g, which are positioned before the heddles c cand guided in a suitable manner in the frame a, allowing the heddles cl to be freely raised and lowered.

The threads a are employed for making the border of the fabric, their lateral position remaining unchanged. The threads (P, which form the pattern, are now closely drawn together, now spread more or less asunder, as shown in Figs. 2 and 3. This motion of the threads d is obtained by means of the frames g. If, for instance, a close spot or like object shall appear in the fabric, the frames g assume the position Fig. 2, and they are kept therein by a number of cams or tappets it, against which the frames 9 are drawn by springs 2'. These cams are of different size and moved bya ratchet device F from the jacquardmachine. For this purpose a lever b is oscillated by means of a cord 1) from the j acquardmachine, which by means of a pawl 1) turns the ratchet-wheel 6 With U is turned apinion 6 which meshes with a gear 6 that is in connection with a gear b keyed to the shaft 17 of'the cams h, the cams being thus turned by the device described and the frames caused to be pushed forward according to the pattern more or less, as will be seen from Fig. 3. According to such motion of the frames the threads d are also spread asunder, so that the pattern may be woven or the threads bound by the weft and the arc-shaped border forming a part of my invention may be completed. In order to allow displacement of the threads d", the reed d is arranged to be removed from the warp. This effect is obtained by a tap pet 70, Fig. 4., operating a usual treadle-lever Z, having connection by a cord on with the reed d, and raising and lowering thus the reed cl before or after each pick of weft, respectively. The arc-shaped border, Figs. 2 and 3, is made by means of the warp-threads 0 passing through the reed c, which areof a strong material or of wire. According to the length of the single slings forming the are two or more of the threads are raised,iallowing the weft to run through, whereupon they are lowered so that the weft can return over them and the sling is formed. The threads 0 are mounted on a beam and cut out after the fabric is finished. By means of these threads 0 which may be also replaced by wires, as said before, in combination with the motion of the frames, the curved edge of the fabric will be completed. The weft is inserted in the ordinary way long known in looms by the shuttle, which is reciprocated to and fro according to the pattern by a rack which engages the shuttle. The rack itself is governed by any means-for instance, by a jacquard mechanismaccordin g to the pat tern to give a longer or shorter throw.

lVhat I claim, and desire to secure by Letters Patent, is-

In a loom for making lace fabric the combination of difierently-arranged heddles, a

batten containing a reed comprising two fixed and a raised and lowered middle portion, means to reciprocate said portion in vertical direction, a number of frames governing the heddles of the threads passed through the movable reed, cams or tappets of difierent size controlling the frame and a ratchet mechanism governed by the jacquard-machine for turning the cams substantially as described and for the purpose set forth. t

. AUGUST RONSDORF.

Witnesses:

AUGUST SIEGFR ED DQCEN, HEINRICH MARTIN PETTERSEN. 

